baber/WOPTO huggingface dataset:
Patent DE-2252149-A1 (DE)
Title: Screen filter with variable angle of inclination - solids collecting on screen are backflushed by sprays and collected
Inventor: HAMMELMANN PAUL
IPC: B01D29/01
Filed: 1972-10-25
Abstract: Optimisation of filter obtained by altering the angle of rake of the screen which is pivoted about an axis, comprises using an adjustable counterbalance which can be filted with water. Backflushing obtained by spray pipe with pressure nozzles to remove deposit. These spray on the clean side of the screen and complete coverage is achieved by sliding the pipe up and down in numero fitted to the fitting frame. The cake slides off and can be recovered if required. The whole can be done with minimum interruption to operation.
Patent DE-2253885-A1 (DE)
Title: Solid electrolyte contg alumina, titania and zirconia - used in metallurgy for determining degree of oxidn. of liq. metals e.g. steel
Inventor: SEMKINA GEB KRASNENKO NOWELLA
IPC: C04B35/111
Filed: 1972-11-03
Abstract: Solid electrolyte contg., by wt., 85-95 % Al2O3, 1-5% TiO2 and 4-10% ZrO2, has raised working life, e.g. to 2-4 hrs. in uninterrupted contact with metal and >80-90% reliability in working. Props. include : 0-1 open porosity, 3.7-4.1 g/cc apparent density, 8-15 temp. change cycle stability at 1300-20 degrees C in air, 93-98% ion conductivity.
Patent DE-2260771-A1 (DE)
Inventor: COOK JUN EDWARD H
IPC: C25B13/00
Filed: 1972-12-12
Abstract: A method is disclosed for patching cation-active permselective diaphragm material consisting essentially of a hydrolyzed copolymer of a perfluorinated hydrocarbon and a fluorosulfonated perfluorovinyl ether.
Patent DE-2265071-A1 (DE)
Title: Variable resistor with contact surfaces in two planes - has wiper with contact spring and terminal tag as integral part forming stop
Inventor: HEHL KLAUS FRIEDRICH
IPC: H01C10/42
Filed: 1972-11-04
Abstract: The resistance element has contact surfaces in various planes and connected to a movable wiper. The wiper provides good contact and can withstand a higher current than in conventional resistors. The component can easily be replaced. The wiper has a contact spring which is self-locking in a cut out of an operating lever (14a). The contact spring (1b) has a terminal tag at one end forming an integral part of the spring. Part of the surface of the contact spring is removed to provide a weakening effect (102). The rear end of the contact spring forms a stop which will come to rest against the stop of the operating lever. The locking section (39) is bent upwards, and will come partly to rest in a cutout (101) of the operating lever.
Patent DE-2320525-A1 (DE)
Title: Wear-resistant sinter alloy - sliding pts contg iron, boron , carbon opt molybdenum and/or nickel
Inventor: MATSUMURO NAOKI
IPC: F16C33/12
Filed: 1973-04-21
Abstract: Wear-resistant B-rich sinter alloy useful as material for sliding contacts in engines contains 1-4%C, 0.5-2% B and >=84% Fe, pref. =5% Ni, opt. =2% Mo and =3% total impurities and alloying elements other than C, B, Fe, Ni and Mo. Sinter alloys do not cause grooves on pts. on which they slide (owing to presence of Fe-B-C eutectic having 1100-1300 VH under 200 p); do not seize and require little lubrication; surface does not scale; addn. of Ni and/or Mo raises heat-resistance and strength.
Patent DE-2330035-A1 (DE)
Title: Coil winding pressing inserter into motor stator slots - uses radially expanding insertion jaw segments and slot wedges
Inventor: APPT ERICH
IPC: H02K15/00
Filed: 1973-06-13
Abstract: The winding inserter has radially expanding jaw segments whose outward motion presses the windings into the stator slots. Slot wedges are keyed into the sides of the jaws and situated between jaw segments wit their narrower ends outermost. As the jaws move outwards the wedges move with them, to prevent any slot being left between the jaws into which a winding might be inserted. The wedges are linked to the jaws drive mechanism so that they return with the jaws.
Patent DE-2334428-A1 (DE)
Title: Transmission system for coded sound signals - has two symmetrical inputs and outputs coupled to respective analogue ccts.
Inventor: ADAM HEINRICH
IPC: H04K1/00
Filed: 1973-07-06
Abstract: The two input ccts. at the transmission side are coupled to an analogue cct. with a given switching frequency, so that the latter receives the incoming sound signals, with the phase of the switching frequency varying in time between 0 and 180 deg. A similar analogue circuit is located at the receiving side, to which the transmitted coded signal is supplied so as to obtain the original sound signal from the lower sideband signal. The switching frequency of the second analogue cct. is maintained in synchronism with the first analogue cct. by transmitting a synchronising signal together with the lower sideband signal. The synchronising signal is supplied from the same oscillator as the switching frequency signal for the first analogue circuit.
Patent DE-2334632-A1 (DE)
Title: N,N-disubstd. carboxylic acid amides prepn - by catalytic reaction of carboxylic acid anhydrides and allyl-substd. tert. amines
Inventor: HEY HANSJOERG DIPL-CHEM DR
IPC: B01J31/24
Filed: 1973-07-07
Abstract: Cpds. of formula (I)(CH(R2)=C(R3)-CH(R4))2-n-N(R1n)-CO-R5 (where R1 and R5 are each 1-10C alk(en)yl, Ph, -CH2Ph or -CHPh2; R2 and R4 are each H, or one is 1-5C alk(en)yl; R3 is H or Me; and n = 0 or 1) are prepd. by reacting carboxylic acid anhydrides, of formula (II): (CH(R2)=C(R3)-CH(R4)3-n-R1n, and tert. amines of formula (III) O=C(R5)-O-C(R5)=0; and cpds. (I; R2 and R4 = H; R5 = -(CH2)m-COOCH2-C(R3)=CH2; and m = 2 or 3) are prepd by reacting (II; R2 and R4 = H) with (III; both R5 gps. form -(CH2)m-). The catalyst used is a cpd.or complex of Pd and a tert. phosphine, pref. a salt or complex of bivalent Pd and triphenylphosphine. Reaction pref. proceeds in the absence of O2. (I) are used as solvents, plasticisers, in plant protection and as inters. for conversion to double bonds.
Patent DE-2343954-A1 (DE)
Title: Tyre-burning apparatus - utilising a rotary combustion furnace
Inventor: FRANK DIETER DIPL-ING
IPC: F23G5/20
Filed: 1973-08-31
Abstract: Appts. for burning old tyres comprising a rotary furnace provided with hooks on its inner wall, at least in the inlet zone, which, for the retention of a tyre held thereon, are curved in the direction of rotation in the arcuate section between the retention position and the highest point of rotation. More especially, the hooks are mutually spaced peripherally and axially by a distance greater than the mean internal dia. of the tyres and approximately equal to their mean external dia., while between the hooks block-type projections are provided on the inner wall of the drum. Provides a efficient reliable method of burning tyres with minimum operator costs, using a rotary drum in place of the stationary furnace through which the tyres are transported on an overhead suspension track.
Patent DE-2345046-A1 (DE)
Title: Unit containing cct board - has at least one substrate connected on which cct configuration is produced
Inventor: DREKMEIER KARL GERD
IPC: H01R12/72
Filed: 1973-09-06
Abstract: The unit is produced on at least one substrate surface by the layer method. Spring clamps make contacts with metallised zones near the substrate edge. The clamps are made in one piece with the connecting strips, and inserted into the board raster holes. The spring ends are tulip-shaped, with an opening of 90 to 110 deg. The maximum spacing between the tulip-shaped springs is about twice the spacing between the springs near their opening ends. All springs have the same width, and their outer edges lie in the same plane. The invention provides a sure working arrangement for layer circuits and circuit plates using the smallest amount of space and the simplest construction.
Patent DE-2348677-A1 (DE)
Title: Photosensitive layer for holographic plate - consists of a controlled thickness of evaporated magnesium fluoride
Inventor: KIEMLE HORST DR ING
IPC: G03H1/02
Filed: 1973-09-27
Abstract: The photographic plate for use in holography has an optically plane glass base. The photosensitive surface is formed by a layer of evaporated magnesium fluoride. The thickness of the layer is controlled so that a phase shift of between 30 deg. to 90 deg., typically 60 deg. is obtained for transmitted laser light. The exposed image is photo etched. The design is intended to improve the optical properties such as reflectivity and resolution combined with scratch resistance.
Patent DE-2350025-A1 (DE)
Title: Agent for making contacts on ceramic resistances - contg. conducting metal and same ceramic conductor as in resistance
Inventor: POLLNER RUDOLF
IPC: H01C17/28
Filed: 1973-10-05
Abstract: Agent for making contacts on ceramic resistance, e.g. thermistors, esp. for use at temp. above 400 degrees C, consists of (I) a conducting metal, and (II) an additive consisting of the same electrically conducting ceramic material as that in conducting component of the ceramic resistance. The agent remains strongly bonded during long exposure to temps above 400 degrees C. The agent pref. consists of 20-90 wt. % (I) and 80-10 vol. % (II). (I) pref. consists of a high melting noble metal, esp. Pt. (II) pref. consists of Fe2O3.
Patent DE-2350310-A1 (DE)
Title: Windings for multiwinding transformer - course and fine secondary windings are split and wound symmetrically
Inventor: WIDMANN WERNER
IPC: H01F27/34
Filed: 1973-10-06
Abstract: A means if provided for reducing the coupling between course and fine windings on a transformer having a tap selector and split secondary windings. This is achieved by dividing either or both course and fine windings into separate layers which are symmetrically disposed to each other. The diameters are so chosen that a part of the split winding is spatially arranged inside and the remainder spatially outside the other winding. The efficiency of the coupling is thereby increased. The physical positioning of windings can be in several forms.
Patent DE-2354459-A1 (DE)
Title: Surge suppressor with overpressure release and blow off flap - has radial nozzles diametrically opposite with one piece captive flap
Inventor: SCHREINER BERNHARD
IPC: H01T1/15
Filed: 1973-10-31
Abstract: The overpressure release flap on the surge suppressor acts as an indicator. The two blow off nozzles are radial and are diametrically opposite each other. In normal conditions each opening is covered over by the flap which is made from a single stamping and is fixed to the underside of the end fitting. When there is a blow off the flaps pivot outward hinging at the bottom on thin flexible strips. They are clearly visible so as to act as an indicator of the pressure release. The flap can be made either from a weak non-elastic material which will remain in its deformed state or an elastic spring material forming part of the main spring.
Patent DE-2356911-A1 (DE)
Title: Silicone rubber contact lens - with double curvature convex side
Inventor: FENEBERG PAUL DIPL PHYS
IPC: B29C43/00
Filed: 1973-11-14
Abstract: A soft contact lens, with negative refractive index and partic. of silicone rubber, is made by pressing the convex side, with a central area having a pref. spherical surface for optical effect and at lest one adjacent zone of greater curvature than the centre. The lens is optically perfect and has a rounded edge for wear purposes.
Patent DE-2362469-A1 (DE)
Title: Joining sintered ceramic components - esp in the mfr of silicon nitride gas turbine impeller wheels
Inventor: RAEUCHLE WILFRIED DR
IPC: C04B35/645
Filed: 1973-12-15
Abstract: One or more pre-sintered components are inserted in a hot die and a suitable sintering powder is then put in the die followed by hot-pressing to form a monolithic component. The pre-sintered parts are pref. made of silicon nitrile while the powder is silicon nitride contg. max. 10 wt. % of a sintering agent, e.g. MgO, which forms silicates with SiO2. Prior to hot pressing, the pre-sintered parts may be given an oxidn. treatment and/or coated with a sintering agent which forms silicates with SiO2. Used in the mfr. of impeller wheels for gas turbines where the rotor blades are the pre-sintered parts and the powder is used for hot-pressing the wheel. The finished prat will withstand high thermal-and mechanical stresses at high temp.
Patent DE-2405039-A1 (DE)
Title: Recording information on photosensitive discs - using laser beam to produce a track and modulated laser beam to record
Inventor: BUETTNER ULRICH
IPC: B23K26/351
Filed: 1974-02-02
Abstract: Information is recorded on a disc coated with photosensitive lacquer using an unmodulated beam to irradiate the disc in a first series of spots (e.g. circular) to form a track which a pick up head can follow and a modulated laser beam to irradiate the disc in a second series of spots (e.g. elliptical) which is superimposed on the first series of spots, the information (on which modulation depends) being recorded by the second series of spots. The laser beams are formed by splitting a single laser beam or by using two separate lasers, and the modulator may be electro-optical or acousto-optical. The method is used in preparing discs for video machines and particularly for sound reproduction. Recording can be effected at high speeds and frequencies of 4MHz can be handled.
Patent DE-2407726-A1 (DE)
Title: Remote control of independent radio microphones - uses wireless control signals, such as modulated or unmodulated ultrasonic signals
Inventor: GRIESE HANS-JOACHIM DR ING
IPC: H03G1/02
Filed: 1974-02-18
Abstract: The system is intended for the remote control of one or several studio microphones and the control signals are modulated or unmodulated ultrasonic signals. Owing to a coding, preferably the control signals selectively control only one, or only a certain group of radio microphones. The ultrasonic signals lie in the frequency range between 20 and 100 kHz. Ultrasonic signals in a studio or a conference room re transmitted by several transmittion transducers. Both the audible signals and ultrasonic control signals are picked up by a receiving transducer. Preferably the ultrasonic control signals switch in the microphone transmitter(s) and these transmit then the control signals during their transmission only.
Patent DE-2408467-A1 (DE)
Title: Spring loaded closing element for furniture doors - has compression spring on a rod pivoted at two points
IPC: E05F1/14
Filed: 1974-02-22
Abstract: This spring loaded closing element is used, for example, for furniture doors opened upwards or in other directions. The spring ensures smooth movement and also ensures positive closing effort. The central rod of the closing element has two pivot mechanisms and a helical spring is fitted between thse pivots. The pivot on the hinged door pivots one end of the rod which slides through the pivot mechanism on its travel. This pivot is held on the fixed part of the furniture. The compression spring ensures that the door does not fall freely under gravity. The closing effect is achieved by arranging the spring loaded rod to pivot beyond its dead centre position. The length of the pivot mechanism relative to the pivot determines the dead centre effect.
Patent DE-2409806-A1 (DE)
Title: Pressure element for expansion compensation in hydraulic system - contains fluid on one side of a semi-permeable membrane
Inventor: STRAUB STEFFEN DIPL ING
IPC: F15B7/06
Filed: 1974-03-01
Abstract: The pressure element is for the compensation of expansions, diffusions, etc., esp. in light beam width adjusters of vehicles. The element contains a membrane as a pressure member, subjected to a tension above the maximum pressure in the hydraulic system. A fluid is positioned on the side of the membrane, which is away from the hydraulic system. The membrane is semi-permeable. The fluid mentioned is of a different concentration and chemical composition to that within the system. A Spring loaded piston acts onto the fluid.
Patent DE-2413640-A1 (DE)
Title: Active filter for multi-path loudspeaker combinations - has only one filter element for each crossover frequency with several amplifiers
Inventor: KLINGELNBERG ARNDT
IPC: H04R3/14
Filed: 1974-03-21
Abstract: These filters determine the active filter properties. The filtering effect for the adjacent frequency band is achieved by subtracting the filtered signal from the total signal, or from its part, so that the total signal is recovered by addition of all frequency bands. The filters can be passive filters. Elements additionally controlling the frequency and phase characteristics can be provided. The filter constituting the active filter assembly may separate several frequency bands for additional loudspeakers or loudspeaker combinations. The filter assembly meets all requirements of efficient distribution of high quality loudspeaker operation in a multi-path system.
Patent DE-2417889-A1 (DE)
Title: Viscosity measured by twist in sleeve - completely housed in propulsion screw and connected to nose unit
Inventor: REVESZ HANS DIPL ING
IPC: G01N11/14
Filed: 1974-04-11
Abstract: A viscometer measures the viscosity of a liq. conveyed by a revolving screw as a function of the twist in a tube connecting this screw to a nose unit mounted axially as an extension of the screw. The connecting sleeve is entirely housed inside the propelling screw, one end of the sleve being connected to that end of the screw which is nearest to the nose unit, and the other end of the sleeve being connected to the periphery of a projecting bar or stub extending back from the nose unit into the interior of the screw. Pref, the angle of twist of the sleeve is measured by strain measuring strips fitted to the external surface of the sleeve. Pref, the backward projecting bar from the nose unit is slightly longer than the sleeve itself, so that there is a resultant annular gap between the nose unit and front end of the screw; this gap may be accessible to the pressured liq. being measured or may be sealed against it, in either case thus relieving the torsional sleeve from axial loading resulting from the liq. pressure.
Patent DE-2419081-A1 (DE)
Title: Contactless transmission device for test values - fitted to concrete mixers with round mixing trough uses inductively coupled coils
IPC: B28C7/02
Filed: 1974-04-20
Abstract: Driving and supporting means for the mixing devices and stirrers are placed centrally above the trough and the device comprises two inductively coupled circular coils which are mounted opposite each other; one of them is stationary and fixed on the central flange, while the other is mounted on the driving shaft gland and rotates with it; the fixed coil is connected to a series of display and control circuits, while the movable coil is connected to measurement sensors through corresponding switches; a part of the coil system is used as a current supply for the rotatable measurement system.
Patent DE-2427886-A1 (DE)
Title: Heat loss prevention for domestic boilers - by throttling of fresh air feed or exhaust gas to flue at burner shutdown
Inventor: LAMB ROBERT
IPC: F23L11/00
Filed: 1974-06-10
Abstract: Heat loss prevention for liquid or gas fired automatic domestic heating systems is based on throttling of the boiler gas discharge during burner-off periods. This throttle action is preferably delayed long enough after burner shut-off to allow incoming fresh air to force out combustibles remaining in the flues when the burner shuts down. The throttle should be operated directly on the flue leading to the stack, or else indirectly by reducing the fresh air supply to the boiler. To effect this there should be a shut-down valve flap (12) either in the air intake to the boiler or the stack flue, with hydraulic, pneumatic or electrical controls to open and close the flap depending on the burner state.
Patent DE-2430922-A1 (DE)
Title: Wiring support for equipment racks - has serrated arm clipped to support rail and carrying square pad with four corner posts to guide wires
Inventor: ALTER SIEGFRIED
IPC: H02G3/04
Filed: 1974-06-27
Abstract: The wiring support, for equipment racks, consists of a serrated arm (15) that is held onto a profield support rail (13) by means of a C-clip (18). (The support rail forms part of the equipment rack). One, or both, ends of the arm has a square pad with four posts (2), extending upwards from its corners. The wires are laid between these posts and held down onto the square pad by a plate passing over the arms and fixed to the pad by a central screw. Such wiring supports can be arranged in a regular matrix at the rear of the equipment rack to simplify the wiring layout.
Patent DE-2434064-A1 (DE)
Title: Road marker stud - has separately fitted polycarbonate reflectors, and is e.g. of polyethylene
Inventor: KRIMMER ERWIN
IPC: E01F9/553
Filed: 1974-07-16
Abstract: The road marker studs serve to define driving lanes and contain >=1 reflector. The reflectors are designed as separate prismatic reflectors that fit into recesses in the stud in which they are fixed by a clip or 'snap-on' connection the recesses being provided with openings pointing in the direction. The studs are cheaper to produce than those with integrally moulded reflectors.
Patent DE-2437064-A1 (DE)
Title: Barrels and piece goods equipment - has transport tracks fitted with reversible transferring plates with reversible motion
Inventor: ARNEMANN GERHARD
IPC: B65G65/00
Filed: 1974-08-01
Abstract: The equipment consists of a ground frame, in which are mounted transport tracks of several endless belts or chains mounted side by side in horizontal plane. The equipment is fitted with transferring plates which are reversibly moving with the transport tracks and mounted in horizontal position between top and bottom run of the transport track close to the top track and are supported at their delivery end facing the transport tracks. The transport tracks are fitted at their delivery end with a pivotable stop bar which moves in the path of the palletised goods when the transferring plates begin to move back from the transport tracks.
Patent DE-2438422-A1 (DE)
Title: Charge state monitor for variably loaded drive batteries - has timing stage only triggering when terminal voltage is below limit for given time
Inventor: PAPALINI BRUNETTO
IPC: G01R31/36
Filed: 1974-08-08
Abstract: The charge state monitoring circuit indicates the charge of a battery or battery system used to supply strongly fluctuating loads, e.g. vehicles etc. The voltage across the battery terminals is measured and passed to a timing stage. The timing stage is connected to an indicator and/or cut-out device. The timing stage gerates an output signal for the cut-out device only when the voltage across the battery terminals remains below a given level for a given time. The 'delay' enables short heavy currents to be drawn from the battery without triggering the 'needs charging' monitor.
Patent DE-2445144-A1 (DE)
Title: Camera for producing colour television pictures - has device for automatic correction of colour channel sensitivity for correct colour reproduction
Inventor: KUNZE CLAUS DIPL PHYS DR
IPC: H04N9/73
Filed: 1974-09-20
Abstract: The colour reproduction of a television camera may be corrected for different colour temperatures of the lighting of the scene in a studio. The camera is fitted with two optical filters (5, 6), each of which passes a different wavelength; and the filters are each followed by a photoelectric sensor (1, 2) and there is a differential amplifier (7) which is used to form the ratio of signals from the sensors (1, 2). This ratio is then used as a control variable for the colour television camera. Light may be reflected into the two sensors (1, 2) by a mirror (4) which may tilt to and fro (8).